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Astronomy

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  • $\begingroup$ The distribution of star classes is not believed to be linear over time. Stars similar to the Sun are unlikely to have been so common during the early evolution of the universe. $\endgroup$
    – Mitch Goshorn
    Commented Dec 15, 2014 at 17:56
  • $\begingroup$ I thought this same thing a couple of years ago. My research led me to understand that earlier in the universe's history the stars were larger and much shorter lived. I never was able to find a nice 'timeline' showing how we could get to the level of heavy elements seen throughout the solar system though so I hope someone here can provide some references to that sort of data. $\endgroup$
    – Tracy Cramer
    Commented Dec 15, 2014 at 18:22